private byte[] FilterRESTRequest(
RestHandlerOpCode opCode,
RestRequestParameters restInput,
out string responseProperties)
{
try
{
responseProperties = null;
IRESTRequestHandler restRequestHandler = _restServiceSOI.FindRequestHandlerDelegate <IRESTRequestHandler>();
if (restRequestHandler == null)
{
throw new RestErrorException("Service handler not found");
}
RestFilter restFilterOp = _restServiceSOI.GetFilter(opCode);
if (null != restFilterOp && null != restFilterOp.PreFilter)
{
restInput = restFilterOp.PreFilter(restInput);
}
byte[] response =
restRequestHandler.HandleRESTRequest(restInput.Capabilities, restInput.ResourceName, restInput.OperationName, restInput.OperationInput,
restInput.OutputFormat, restInput.RequestProperties, out responseProperties);
if (null == restFilterOp || null == restFilterOp.PostFilter)
{
return(response);
}
string newResponseProperties;
var newResponse = restFilterOp.PostFilter(restInput, response, responseProperties, out newResponseProperties);
responseProperties = newResponseProperties;
return(newResponse);
}
catch (RestErrorException restException)
{
// pre- or post- filters can throw restException with the error JSON output in the Message property.
// we catch them here and return JSON response.
responseProperties = "{\"Content-Type\":\"text/plain;charset=utf-8\"}";
//catch and return a JSON error from the pre- or postFilter.
return(System.Text.Encoding.UTF8.GetBytes(restException.Message));
}
}
private RestHandlerOpCode GetHandlerOpCode(string resourceName, string operationName, bool isAskingForReturnUpdates = false)
{
if (isAskingForReturnUpdates)
{
return(CustomRESTHandlerOpCode.RootReturnUpdates);
}
RestHandlerOpCode opCode = RestSOIHelper.GetHandlerOpCode(resourceName, operationName);
if (opCode != RestHandlerOpCode.DefaultNoOp)
{
return(opCode);
}
// The code below deals with the custom REST operation codes. This is required to enable REST request filtering for custom SOEs.
// In this example the switch statement simply duplicates RestSOIHelper.GetHandlerOpCode() call.
// If you don't plan to support filtering for any custom SOEs, remove code below until the end of the method.
// If you want to support filtering for custom SOEs, modify the code below to match your needs.
var resName = resourceName.TrimStart('/'); //remove leading '/' to prevent empty string at index 0
var resourceTokens = (resName ?? "").ToLower().Split('/');
string opName = (operationName ?? "").ToLower();
switch (resourceTokens[0])
{
case "":
switch (opName)
{
case "":
return(RestHandlerOpCode.Root);
case "export":
return(RestHandlerOpCode.RootExport);
case "find":
return(RestHandlerOpCode.RootFind);
case "identify":
return(RestHandlerOpCode.RootIdentify);
case "generatekml":
return(RestHandlerOpCode.RootGenerateKml);
default:
return(RestHandlerOpCode.DefaultNoOp);
}
case "layers":
{
var tokenCount = resourceTokens.GetLength(0);
if (1 == tokenCount)
{
return(RestHandlerOpCode.RootLayers);
}
if (2 == tokenCount)
{
switch (opName)
{
case "":
return(RestHandlerOpCode.LayerRoot);
case "query":
return(RestHandlerOpCode.LayerQuery);
case "queryRelatedRecords":
return(RestHandlerOpCode.LayerQueryRelatedRecords);
default:
return(RestHandlerOpCode.DefaultNoOp);
}
}
}
break;
case "legend":
return(RestHandlerOpCode.RootLegend);
case "dynamiclayer":
switch (opName)
{
case "query":
return(RestHandlerOpCode.DefaultNoOp); //MyRESTHandlerOpCode.DynamicLayerQuery;
default:
return(RestHandlerOpCode.DefaultNoOp);
}
default:
return(RestHandlerOpCode.DefaultNoOp);
}
return(RestHandlerOpCode.DefaultNoOp);
}
/// <summary>
///
/// </summary>
/// <param name="restFilterOp"></param>
/// <param name="restInput"></param>
/// <param name="authorizedLayers"></param>
/// <param name="responseProperties"></param>
/// <returns></returns>
private byte[] FilterRESTRequest (
RestHandlerOpCode opCode,
RestRequestParameters restInput,
out string responseProperties )
{
try
{
responseProperties = null;
IRESTRequestHandler restRequestHandler = _restServiceSOI.FindRequestHandlerDelegate<IRESTRequestHandler>();
if (restRequestHandler == null)
throw new RestErrorException("Service handler not found");
RestFilter restFilterOp = _restServiceSOI.GetFilter(opCode);
if (null != restFilterOp && null != restFilterOp.PreFilter)
restInput = restFilterOp.PreFilter(restInput);
byte[] response =
restRequestHandler.HandleRESTRequest(restInput.Capabilities, restInput.ResourceName, restInput.OperationName, restInput.OperationInput,
restInput.OutputFormat, restInput.RequestProperties, out responseProperties);
if (null == restFilterOp || null == restFilterOp.PostFilter)
return response;
string newResponseProperties;
var newResponse = restFilterOp.PostFilter(restInput, response, responseProperties, out newResponseProperties);
responseProperties = newResponseProperties;
return newResponse;
}
catch (RestErrorException restException)
{
// pre- or post- filters can throw restException with the error JSON output in the Message property.
// we catch them here and return JSON response.
responseProperties = "{\"Content-Type\":\"text/plain;charset=utf-8\"}";
//catch and return a JSON error from the pre- or postFilter.
return System.Text.Encoding.UTF8.GetBytes(restException.Message);
}
}
